Diagnosing HP ScanJet 2200c

[DaveC]

HP scanner is brain-dead. History is that this scanner died during an
electrical storm. Applying power (outboard supply brick) results in no
function. Power seems to be at all ICs. Power is good. No visible fuses.

Scanner consists of 2 boards: one that looks like USB board and motor
interface. Second is on traveling video bed.

Questions:
1. Does the USB board perform just serial-to-parallel functions?
2. Where is the firmware located? On chipset on the video board?
3. What is the power-up sequence on this scanner?
4. Where should I look for signs of life?

Any suggestions to resurrect this scanner would be greatly appreciated.

Thanks,
--
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ask a question here if I hadn't done that already.

DaveC
me@privacy.net
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[NSM]

"DaveC" <me@privacy.net> wrote in message
news:0001HW.BDE3F16D003058ABF02845C0@news.individual.net...
| HP scanner is brain-dead. History is that this scanner died during an
| electrical storm. Applying power (outboard supply brick) results in no
| function. Power seems to be at all ICs. Power is good. No visible fuses.

How worth fixing is it? I've bought new ones for $8 after rebates, used for
$1. Is it especially nice?

NM

 

[DaveC]

On Tue, 14 Dec 2004 10:58:23 -0800, NSM wrote
(in article <jJGvd.35013$Ya4.12357@edtnps84&gt:

How worth fixing is it? I've bought new ones for $8 after rebates, used for
$1. Is it especially nice?

No, it's not. But I like a repair challenge, and this one needs help.
--
Please, no "Go Google this" replies. I wouldn't
ask a question here if I hadn't done that already.

DaveC
me@privacy.net
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[NSM]

"DaveC" <me@privacy.net> wrote in message
news:0001HW.BDE606EF0035B86CF03055C0@news.individual.net...
| On Tue, 14 Dec 2004 10:58:23 -0800, NSM wrote
| (in article <jJGvd.35013$Ya4.12357@edtnps84&gt:
|
| > How worth fixing is it? I've bought new ones for $8 after rebates, used
for
| > $1. Is it especially nice?
|
| No, it's not. But I like a repair challenge, and this one needs help.

Given that "History is that this scanner died during an electrical storm" I
would look at anything connected to an external wire. That would include the
power supply. I'd also look to see if I could find a processor, and look for
activity there.

N